eyeglasses$27095$ - translation to ολλανδικά
![Positive [[meniscus lens]]es provide positive diopters, while negative meniscus lenses provide negative diopters.](https://commons.wikimedia.org/wiki/Special:FilePath/Basecurve power.png?width=200 "Positive [[meniscus lens]]es provide positive diopters, while negative meniscus lenses provide negative diopters.")
![This [[phoropter]] is set to an axis of 180 for each eye. This can be seen by noticing the tiny white arrows that are horizontal as they point to the tiny numbers that line the opening the patient looks through. Click the image to see a full resolution version where the individual axis markings become more visible.](https://commons.wikimedia.org/wiki/Special:FilePath/Geraet beim Optiker.jpg?width=200 "This [[phoropter]] is set to an axis of 180 for each eye. This can be seen by noticing the tiny white arrows that are horizontal as they point to the tiny numbers that line the opening the patient looks through. Click the image to see a full resolution version where the individual axis markings become more visible.")
Ορισμός
Βικιπαίδεια
An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist, that specifies the value of all parameters the prescriber has deemed necessary to construct and/or dispense corrective lenses appropriate for a patient. If an eye examination indicates that corrective lenses are appropriate, the prescriber generally provides the patient with an eyewear prescription at the conclusion of the exam.
The parameters specified on spectacle prescriptions vary, but typically include the patient's name, power of the lenses, any prism to be included, the pupillary distance, expiration date, and the prescriber's signature. The prescription is typically determined during a refraction, using a phoropter and asking the patient which of two lenses is better, or by automated refractor, or through the technique of retinoscopy. A dispensing optician will take a prescription written by an optometrist and order and/or assemble the frames and lenses to then be dispensed to the patient.
